SPIRE Design Description - Research Services

Draft SPIRE Design Description Document
Name Location Temp.
(K)
CFIL1
SFIL2
input filter on
4K box
Table 4-5 Spectrometer filtering scheme.
4K 90cm-1
low-pass
edge
Filter Edges
(cm-1)
at pupil in SOB 4K 75cm-1lowpass
edge
90% 85.5
50% 90
10% 94 5
90% 71.3
50% 75
10% 78 8
86
Function
(B=blocking
T=optimum
transmission)
T 17-48cm-1
B 90cm-1+
T 15-50cm-1
B 75cm-1+
after SM8A 4K 15-50cm-1
T/R 15-50cm-
SBS1
beam
1
after SM10A 4K
splitter
15-50cm-1
(>90% 4RT)
T/R 15-50cm-
SBS2
beam
splitter
(>90%
1
(>90% 4RT)
2K cold stop 4K
4RT)
60cm-1 90% 57 T 33-50cm-1
SFIL3S (SW)
low-pass 50% 60 B 60cm-1+
LPE definer
edge
300mK 50cm-1*
10% 63
90% 47.5 T 33-50cm-1
SFIL4S_1 over SW array
low-pass 50% 50 B 50cm-1+
HPE definer
edge
300mK 33cm-1*
10% 52 5
90% 34.65 T 33-50cm-1
SFIL4S_2 over SW array
HPE 50% 33 B 0-33cm-1
10% 31 35
blocker over 300mK 55cm-1 90% 52.2 T 33-50cm-1
SFIL5S SW array
low-pass 50% 55 B 55cm-1+
2K cold stop 4K
edge
55cm-1
10% 57 8
90% 52.2 T 15-33cm-1
SFIL3L (LW)
low-pass 50% 55 B 55cm-1+
LPE definer
edge
300mK 33cm-1*
10% 57 8
90% 31.35 T 15-33cm-1
SFIL4L_1 over LW array
low-pass 50% 33 B 33cm-1+
HPE definer
edge
300mK 15cm-1*
10% 34 65
90% 15.75 T 15-33cm-1
SFIL4L_1 over LW array
HPE 50% 15.0 B 0-15cm-1+
10% 14 25
blocker over 300mK 40cm-1 90% 38 T 15-33cm-1
SFIL5L LW array
low-pass 50% 40 B 40cm-1+
edge 10% 42
Comment
Thermal blocker.
Common.
Thermal blocker.
Common.